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1、扭曲立方体论文:几种超立方体变型性质的研究【中文摘要】超立方体以其正则性、对称性、强层次结构和高容错性等优越性质成为最具吸引力的互连网络之一,但它并不是各方面性质都最好的互连网络。迄今为止,文献中提出了超立方体的多种变型,如局部扭立方体,扭曲立方体等。本文首先研究了n-维扭曲立方体TNn上的网格嵌入;进一步,针对n-维局部扭立方体LTQn和TNn在升级方面的不足,分别提出了具有N个顶点的超级局部扭立方体WN和超级扭曲立方体SN(n=「log2N」),并研究了它们的若干性质。本文取得了如下研究结果:(1)研究了TNn上的网格嵌入。证明了:当n≥1时,TNn上可以扩张1以及膨胀1
2、嵌入2×2n-1网格;当n≥4时,TNn上不可以扩张1嵌入m×k(m≥3,k≥3)网格;当n≥4时,TNn上可以扩张2以及膨胀1嵌入2个互不相交的4×2n-3网格。(2)提出了超级局部扭立方体WN。证明了以下几个结论:WN的最小顶点度数满足n≤δ(WN)≤n+1;WN的最大顶点度数满足n≤Δ(WN)≤2n+1;WN的顶点连通度、边连通度和最小顶点度数满足κ(WN)=λ(WN)=δ(WN);WN是一个哈密顿图;WN的直径满足「(n+3)/2」≤d(WN)≤「(n+3)/2」+1。(3)提出了超级扭曲立方体SN。证明了:SN的最小顶点度数满足n≤δ(SN)≤n+1;SN的最大顶点
3、度数满足n≤Δ(SN)≤2n;SN的顶点连通度、边连通度和最小顶点度数满足κ(SN)=λ(SN)=δ(SN);SN是一个哈密顿图;SN的直径满足d(SN)≤「(n+1)/2」+1。【英文摘要】Thehypercubehasbeenprovedtobeoneofthemostpopularinterconnectionnetworksforitssuperiorpropertiessuchasregularity,symmetry,stronghierarch,andstrongfaulttoleranceandsoon.Butthehypercubeisnotaninterc
4、onnectionnetworkwhoseallpropertiesareoptimal.Sofar,anumberofhypercubevariantssuchasthelocallytwistedcubeandthetwisted-cubehavebeenproposedintheliterature.Inthispaper,wefirststudiedtheembeddingofmeshesinton-dimensionaltwisted-cubesTNn.Furthermore,owingtotheshortcomingofLTQnandTNnwithrespectt
5、oupgrading,weproposedthesuperlocallytwistedcubesWNandthesupertwisted-cubesSNwithNvertices,wheren=「log2N」.Themajorresearchresultsaresummarizedinthefollowingthreeaspects:(1)Westudiedtheembeddingofmeshesintotwisted-cubes.Wefoundthreemajorresultsinthissection:Foranyintegern≥1,2×2n-1meshcanbeemb
6、eddedintoTNnwithdilation1andexpansion1;Foranyintegern≥4,anm×k(m≥3,k≥3)meshcannotbeembeddedintoTNnwithdilation1;Foranyintegern≥4,twonode-disjoint4×2n-3meshescanbeembeddedintoTNnwithdilation2.(2)WeproposedthesuperlocallytwistedcubesWN.Weobtainedfivemajorresultsasfollows:TheminimumdegreeofWNsa
7、tisfiesn≤δ(WN)≤n+1;ThemaximumdegreeofWNsatisfiesn≤Δ(WN)≤2n+1;Thevertexconnectivity,edgeconnectivityandminimumvertexdegreeofWNsatisfiesκ(WN)=λ(WN)=δ(WN);WNisaHamiltoniangraph;ThediameterofWNsatisfies「(n+3)/2」≤d(WN)≤「(n+3)/2」+1(3)Weproposedthesupertwisted-